STAG 15 BCG – Bolt Carrier Group – AR15 – Left Handed – Nickel Boron – 5.56/.223/300 BLK

This bolt carrier assembly is designed to work with any AR-15 rifle, upper half, or barrel designed for left hand ejection in the 5.56/.223 caliber. The nickel boron coating has increased lubricity and a low friction co-efficient; therefore, the life expectancy of a firearm will be greatly increased due to reduced friction wear.